Postpartum hemorrhage is defined as bleeding of more than 500 ml since delivery or more than 1,000 ml after cesarean section within 24 hours after delivery, which is a serious life-threatening complication of childbirth, and the main causes are weak uterine contraction, placental factors, soft birth canal laceration and coagulation dysfunction, among which weak uterine contraction is the most common. These causes are often not independent, but can co-exist, influence each other, or be mutually causative. Symptoms of postpartum hemorrhage are closely related to the cause of the hemorrhage, the amount of blood loss, and the rate of blood loss. The main manifestation is vaginal bleeding after the delivery of the fetus and placenta. Excessive blood loss can lead to shock and anemia symptoms, such as dizziness, weakness, pallor, mental irritability, cold extremities and so on. Doctors can make a diagnosis based on the amount of blood loss within 24 hours after the delivery of the fetus. The key to diagnosis lies in the correct measurement and estimation of the amount of bleeding and the accurate preliminary judgment of the cause of the bleeding, which will guide the correct initial treatment and therapy. Patients with postpartum hemorrhage are mainly treated with drugs that promote uterine contraction and hemostatic drugs, while care should be taken to avoid infection. Hysterectomy is the first-line drug for the prevention and treatment of postpartum hemorrhage, which is mainly administered by injection. In addition, prostaglandin preparations can also be applied, and commonly used drugs include misoprostol and carboprost aminoglutethimide. The hemostatic drug tranexamic acid may be used when conventional pharmacological treatments, such as uterotonics, fail to stop bleeding, and adequate amounts of antibiotics are usually given to prevent infection. For patients with ineffective pharmacological treatments, surgical treatments such as uterine tamponade, uterine compression suture, and pelvic vascular ligation should be performed when it is difficult to stop bleeding. In addition, mothers should pay attention to the ventilation of the environment to avoid catching a cold, pay attention to personal hygiene during the puerperium, wash the perineum in a timely manner to avoid bacterial infections, change tampons or sanitary napkins and other personal hygiene products, pay attention to regular observation of the situation of the evil discharge to prevent late postpartum hemorrhage, and for reissue of the blood should be promptly sought medical attention.